VISION − Vienna survey in Orion - I. VISTA Orion A Survey

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Table 1

On-sky coverage and relative gain in source counts for selected NIR surveys toward Orion A.

Reference	Coverage^a	Gain^b	Bands
	(arcmin²)

Strom et al. (1993)	2772	~4−6^c	JHK
Ali & Depoy (1995)	1472	4	K
Carpenter (2000) ^d	65 857	9.3	JH K_S
Lawrence et al. (2007) ^e	~26 500	1.4	ZYJH K_S
Robberto et al. (2010)	1200	1.4	JH K_S

This work	65 857		JH K_S

Notes. Our survey improves both coverage and sensitivity when compared to the literature.

^(a)

Refers to the common on-sky area of the given survey with our VISTA coverage.

^(b)

Approximate gain in source counts when restricted to the same on-sky coverage.

^(c)

Estimate based on completeness limits since no source catalog is available.

^(d)

Study based on the second incremental 2MASS data release. Source counts in this table were taken from the final 2MASS all-sky data release.

^(e)

Data from UKIDSS DR10. Because of the many spurious detections of nebulosity in the UKIDSS survey, we estimated the gain in source counts by selecting a “clean” subregion.

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